projects:spoolvault
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====== SpoolVault filament dryer ====== | ====== SpoolVault filament dryer ====== | ||
+ | |||
+ | **Work in progress** | ||
+ | |||
+ | {{: | ||
Large 3D printing filament dryer and storage box, with over the top design specs: | Large 3D printing filament dryer and storage box, with over the top design specs: | ||
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* Max drying temperature above 100°C 🔥 | * Max drying temperature above 100°C 🔥 | ||
* Air-tight construction (not while drying) | * Air-tight construction (not while drying) | ||
- | * Ability to hold 4×1kg or 6×700g | + | * Ability to hold 4×1kg or 6×700g spools |
==== Safety ==== | ==== Safety ==== | ||
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==== Settings ==== | ==== Settings ==== | ||
- | Most dryers don't go higher then 70°C. | + | We will develop |
- | Resources: | + | ^ Material |
+ | | ABS | 60-85 | 3-4 | - | | ||
+ | | ASA | 60-80 | 2-4 | - | | ||
+ | | HIPS | 60-80 | 2-3 | - | | ||
+ | | PA (Nylon) | ||
+ | | PETG | 55-65 | 3-8 | - | | ||
+ | | PLA | 40-50 | 4-6 | - | | ||
+ | |||
+ | * Drying temperature can vary. It's a generic safe value. | ||
+ | * Duration: The best method is to observe spool weight. After some time drying stops being effective. | ||
+ | * Printing temp: Educated guess. More research needed. Filament will probably cool in the tube between dryer and a 3D printer, but high temperature will prevent it from absorbing moisture while printing. | ||
+ | |||
+ | === About overheating and over-drying === | ||
+ | |||
+ | Filament can form cracks if dryed too rapidly. If a spool absorbed a lot of water, start with lower temperature and longer drying time. The best approach is to take regular weight measurements while drying. | ||
+ | |||
+ | Over-drying can result in filament degrading and becoming brittle. Don't exceed manufacturer recommended drying time. It's better to have some moisture then an aged spool. | ||
+ | |||
+ | === Research === | ||
+ | |||
+ | Useful generic information about polymers: [[https:// | ||
+ | |||
+ | Theoretical glass-transition temperature doesn' | ||
+ | |||
+ | Most dryers don't go higher then 70°C. | ||
+ | |||
+ | * Glass transition temperature table [[https:// | ||
* Prusa guide [[https:// | * Prusa guide [[https:// | ||
* PrintDry guide [[https:// | * PrintDry guide [[https:// | ||
* Eibos3D Polyphemus settings | * Eibos3D Polyphemus settings | ||
- | === About overheating === | + | There are industrial dryers that heat up to 150°C: |
- | Filament can form cracks if dryed too rapidly. If a spool absorbed a lot of water, start with lower temperature and longer drying time. The best approach is to take regular weight measurements while drying. | + | * Apium F300; 13 000 zł; Presets visible in the promotional video |
+ | * [[https:// | ||
+ | * ABS 60°C 4h, Nylon 70°C 10h | ||
+ | * Purpose FD5; 3200 €; Manual found online | ||
+ | * [[https:// | ||
+ | * PLA 50°C 4h, PA 65°C 6h | ||
- | Most filaments a spools are made out of PS with glass transition at about 100°C. Let's check the temperature when it starts deforming. | + | Filament manufacturers recommendations: |
+ | |||
+ | * 3DXTECH Filament Drying Recommendations | ||
+ | * [[https:// | ||
+ | * PLA 65 2-4, PETG 65 2-4, FLEX TPC 65 4, NYLON 90 4, ASA 80 2-4, ABS 80 2-4 | ||
+ | |||
+ | |||
+ | |||
+ | ---- | ||
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==== BOM ==== | ==== BOM ==== | ||
- | * 🚚 Ammunition Box 47x21x37cm (NATO size 3) | + | * ✔️ |
- | * 🚚 PTC heater 220V 400W 120x50mm | + | * ✔️ |
- | * 🚚 Thermostat (REX-C100) | + | * ✔️ |
- | * 🚚 High temperature fan (from convection oven) | + | * ✔️ |
- | * 🚚 Steel threaded rivets M10 ≥6pcs. | + | * ✔️ |
* ✔️ PTFE tubing & couplers | * ✔️ PTFE tubing & couplers | ||
- | * ❔ Alarm light and buzzer | + | * ✔️ |
- | * 🚚 AC IEC socket with power switch and fuse (AC-01-2) | + | * ✔️ |
* ✔️ Wire crimper and supplies | * ✔️ Wire crimper and supplies | ||
+ | * ❔ Thermal insulation | ||
+ | * ❔ Air supply fans and filter | ||
=== Cost === | === Cost === | ||
- | Goal is to have a basic version for a price of a cheapest commercial | + | Goal is to have a basic version for a price of a cheapest commercial |
- | I was able to get surplus ammunition boxes for 100zł (~$25). | + | I was able to get surplus ammunition boxes for 100zł (~$25). I'm not sure what the best heating solution is yet. PTC heater with automatic shutoff at 150°C and with higher power then other commercial dryers have seems safe. Safer then disassembling a hair dryer. It might be under-powered, |
- | I'm not sure what the best heating solution is yet. PTC heater with automatic shutoff at 150°C and with higher power then other commercial dryers have seems safe. Safer then disassembling a hair dryer. It might be under-powered, | + | Spent so far: **346zł**. |
- | + | ||
- | I chose REX-C100 for a PID temperature controller. It's extremely widely used, and it makes it very cheap. 48zł including SRR with radiator and a K thermocouple. | + | |
- | + | ||
- | Fused IEC socket with rocker switch costs 10zł. I also added optional 2x 220V signal diodes, 7zł. | + | |
- | + | ||
- | Threaded rivets will make installing ports for printing directly from the box very easy. I got both M4 and M10 from Aliexpress for ~30zł. | + | |
- | + | ||
- | Convection oven fan with motor is will costs 75zł new, ~50zł used. I opted for new named C460002A9. Plus speed controller for 8zł. | + | |
- | + | ||
- | Spent so far: **340zł**. The only thing missing is an alarm light& | + | |
=== How to search for parts === | === How to search for parts === | ||
Researching products designed for convection ovens (termoobieg) and DIY meat smoking (wędzarnia) helped. There are no unsolved issues here, just a lot of integration. | Researching products designed for convection ovens (termoobieg) and DIY meat smoking (wędzarnia) helped. There are no unsolved issues here, just a lot of integration. | ||
+ | |||
==== Log ==== | ==== Log ==== | ||
* 2024-03-06 - project started, initial purchase - box i.d. 43.5×37×18.5cm | * 2024-03-06 - project started, initial purchase - box i.d. 43.5×37×18.5cm | ||
+ | * 2024-03-09 - box has been delivered | ||
+ | * 2024-07-13 - electronics assembled on a bench and tested | ||
+ | * 2024-09-22 - work on lower enclosure started | ||
+ | * 2024-09-24 - control panel design | ||
+ | * 2024-09-28 - front panel, relay, fan, heater mounted | ||
+ | |||
===== Ideas for improvements ===== | ===== Ideas for improvements ===== | ||
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* Glass visor | * Glass visor | ||
* Alternative gasket material | * Alternative gasket material | ||
- | * Painting inside with heat-resistant paint (is light color an option?) | + | * Painting inside with heat-resistant paint (white 800°C paint) |
* Flament rotation motor (oven roast motor? microwave oven turntable?) | * Flament rotation motor (oven roast motor? microwave oven turntable?) | ||
* Humidity sensor (needs to be temperature resistant) | * Humidity sensor (needs to be temperature resistant) | ||
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* Load cell for spools | * Load cell for spools | ||
* Klipper/ | * Klipper/ | ||
+ | |||
projects/spoolvault.1709859047.txt.gz · Last modified: 2024/03/08 00:50 by czechu